baber/WOPTO huggingface dataset:
Patent GB-779300-A (GB)
Title: Electroluminescent cell and a method of preparing same
IPC: H05B33/10
Filed: 1955-03-18
Abstract: 779,300. Coating by deposition in vacuo. GENERAL ELECTRIC CO. March 18, 1955 [March 19, 1954], No. 7943/55. Class 82(2) [Also in Group XL(a)] The high resistance phosphor layer of an electroluminescent cell comprises a plurality of adjacent continuous phosphor laminae each provided before deposition of the next lamina with a smooth surface. A thin layer 12 of titanium oxide, 0.1 micron thick, is applied to a glass plate 11, e.g. by interaction of watervapour and titanium tetrachloride at 200- 250‹C. in a nitrogen medium (Fig. 2, not shown). This layer is coated with manganese which is the actuator of the phosphor, by evaporation in vacuo, its thickness being determined by its optical transmitting characteristics, e.g. a value of 40 per cent is desirable (Fig. 3, not shown). The layers of zinc or cadmium sulphide are deposited in the appar atus of Fig. 4 where a wide mouthed vacuum-sealed flask stands in a heated fur nace 38, 39 the plate 11, 12 being supported on an annular lip 42 of the flask. Hydrogen sulphide gas is admitted to the evacuated space and the zinc or cadmium metal or salt 34 in the well 43 is vaporized. The vapours and the manganese coating interact to form a layer of manganese activated zinc or cadmium sulphide phosphor. The plate is cooled and the lamina 13 polished by a rotating disc and an abrasive until it becomes transparent. It is replaced in the flask and a further layer of phosphor deposited, the process being repeated three times. A layer of aluminium, silver, gold, or copper is then deposited. Details of layer thicknesses and resistances are given in the Specification.
Patent GB-667965-A (GB)
Title: Process for the production of 7-halogenosterols
IPC: C07J75/00
Filed: 1949-03-24
Abstract: 7-Halogenosterol 3-esters having a double bond in the 5,6-position and a saturated open chain hydrocarbon residue in the 17-position are obtained by monohalogenating a sterol 3-ester having a double bond in the 5,6-position and an open chain hydrocarbon residue in the 17-position with a Ziegler reagent under substantially non-acid conditions in the presence of pyridine, an alkyl pyridine, a polyalky pyridine, an alkyl ester of a pyridine monocarboxylic acid, an amide of a pyridine monocarboxylic acid, urea or an alkyl ester of carbamic acid.  As Ziegler reagent there may be used N-bromosuccinimide or N-bromophthalimide.  The reaction may be effected in the presence of a -picoline.  The product may be dehydrohalogenated in the presence of an acid acceptor at an elevated temperature to produce a 7-dehydrosterol 3-ester.  Detailed examples are given. Specifications 574,432 and 656,115 are referred to.
Patent GB-477965-A (GB)
Title: Improvements in apparatus for refining paper pulp stock
IPC: B21B23/00
Filed: 1936-07-06
Abstract: 477,965. Refining-engines for paper pulp ; grinding and crushing. COWLES CO. July 6, 1936, No. 8137/37. Convention date, July 5, 1935. Divided out of 466,689. [Class 96] [Also in Group II] Apparatus for refining paper pulp of the type of that described in Specification 453,556 is provided with a form of screen plate 26 in which the perforations are closely arranged in radial lines converging towards the axis of the impeller 8, the perforations in adjacent radial lines being staggered radially. Preferably also the circumferential distance between the centres of perforations radially equidistant from the axis is at least twice the diameter of the perforations. With such a screen, choking of the perforations is obviated. The construction of the apparatus is otherwise the same as that of Specification 466,689, except that scrapers are not employed. Specification 30579/97, [Class 96], also is referred to.
Patent GB-416513-A (GB)
Title: Improved method of increasing the viscosity of mineral oils
Filed: 1933-03-17
Abstract: Mineral oils are thickened by dissolving therein a cellulose ester of a saturated fatty acid having 12--18 carbon atoms in the molecule, such as cellulose stearate, palmitate or dilaurate. Preferably, esters containing two ester groups per molecule of cellulose (reckoned as C6H10O5) are used.  The products are useful as lubricating-greases or as external medicinal emollients.ALSO:Emollients for external use are prepared by thickening mineral oils by dissolving therein a cellulose ester of a saturated fatty acid containing 12-18 carbon atoms in the molecule, such as cellulose stearate, palmitate or dilaurate.  Preferably esters containing two ester groups per molecule of cellulose (reckoned as C6H10O5) are used.
Patent GB-770657-A (GB)
Title: Improvements in or relating to fishing line reels
IPC: A01K89/015
Filed: 1954-03-22
Abstract: 770,657. Fishing reels. WHIPP, F. E., [representative of WHIPP, I. T. L.]. April 28, 1955 [March 22, 1954], No. 8230/54. No. 48 [Also in Group XXIV] A winding gear for a fishing reel embodies a manually rotatable friction clutch part 11 adapted to engage a second friction clutch part 7 and having a screw thread engagement with an axially fixed element 12 such that rotation of the first friction clutch part 11 in the winding direction causes it to advance axially into engagement with the second clutch part 7 as a result of resistance to rotation applied to the element 12, which resistance is greater in the unwinding than in the winding direction and is provided by the engagement with the element 12 of the convolutions of a spiral spring 14 anchored at one end 15. The first clutch part 11 is formed integrally with a driving shaft 10 and is conically bored to receive the second clutch part 7 which is conical and is secured to the reel spindle 6 by a pin 8 engaged in an open-ended slot 9 in the spindle. The element 12 surrounds the first clutch part 11 and is rotatable in an outer cylindrical casing 1 secured to a reel plate 4. The spiral spring 14 is located in an annular recess 13 in the casing 1. Rotation of the element 12 in the unwinding direction tightens the convolutions of the spring 14 around the element to lock it against rotation whereas rotation of the element in the winding direction unwraps the convolutions so that they give only slight resistance to rotation of the element. A light spring may be interposed between the two clutch parts 7, 11.
Patent GB-236273-A (GB)
Title: Process for the production of ingot iron
IPC: C21C5/04
Filed: 1924-04-01
Abstract: 236,273. Jensen, C. A., (International Metal Products Co.). April 1, 1924. Purifying and refining.- Ingot iron in which the aggregate content of carbon, silicon, manganese, sulphur, and phosphorus does not exceed 0.14 per cent is produced by charging an openhearth furnace with a mixture of pig iron and heavy scrap iron in the proportion of 35-45 per cent by weight of pig iron, the remainder being scrap iron, together with limestone, or other flux, subjecting the charge to a relatively high temperature and melting it down, iron ore being added after the charge has melted sufficiently to take up the ore without solidifying. The heating is then continued at high temperature so that the charge is melted fully and purified until the desired percentage of carbon &c. has been obtained, the molten iron tapped at a high temperature into the ladle, the molten metal degasified and deoxidized by adding aluminium or other deoxidizer, preferably as described in Specification 236,274, and then poured into ingot moulds at a temperature of about 2900‹ F. to prevent the formation of skull in the ladle. The heavy scrap iron employed is of low carbon content and the pig iron has a manganese content of about 1 per cent or less and a sulphur content of 0.05 per cent or less. The moulds, prior to the pouring of the molten metal therein, are heated to a temperature above the dew point but not exceeding 500‹ F. Specifications 27201/09, 5015/11, and 27966/13 are referred to.
Patent GB-684144-A (GB)
Title: Improvements relating to dynamoelectric machines
IPC: H02K9/14
Filed: 1951-04-10
Abstract: 684,144. Cooling dynamo-electric machines. BRITISH THOMSON-HOUSTON CO., Ltd. April 10, 1951 [April 26, 1950], No. 8298/51. Class 35. An enclosed dynamo-electric machine has a fan 15 mounted on a shaft 3 and a running seal is formed between a portion of the fan and a member on the bearing so as to prevent the entrance of dirt into the machine. The fan 15 has an imperforate back-plate 16 on which are formed internal and external fan blades 20, 24. A running seal for the bearing 10 is formed by an annular flange portion 26 of an annular bearing baffle member 25 and another annular flange portion 27 formed on the fan plate 16. Another running seal is formed between an annular flange portion 18 of the fan plate 16 and a re-entrant flange portion 14 of a fixed baffle member 12. Specification 17276/15, [Class 35], is referred to.
Patent GB-526759-A (GB)
Title: Improvements in the mounting of wringers upon washing machines
IPC: D06F45/12
Filed: 1939-03-16
Abstract: 526,759. Wringers. BRITISH ELECTRIC DOMESTIC APPLIANCES (1938), Ltd., and EATON, H. A. March 16, 1939, No. 8420. [Class 138 (ii)] A power driven washing machine and wringer has the wringer mounted so that it can be lowered vertically for housing in the casing of the machine, for which purpose the wringer frame 18 is supported on a sleeve 25 of a gear box 21 mounted on a vertical pillar 16 supported in bearings 27, 28 in the casing 10 and pressed upwardly by a spring 37. The electric motor controlled by switches on the shelf 14 of the casing drives the wringer through a splined shaft 20a in the pillar and through the gear box 21, a control handle 39 serving for reversing or stopping the drive. For stowing the wringer it may be turned through 90 degrees on its support on the gear box and secured in either position by a spring-plunger 26, and after withdrawing a catch 32, Fig. 5, by depressing a button 36 the pillar may be rotated until a screw 31 is opposite a slot in the bearing 28 whereupon the pillar can be depressed against its supporting spring until a screw 30 normally engaging under the upper bearing 27 is below the lower bearing 28 and bears thereon when the pillar is rotated and again secured by the catch 32.
Patent GB-199161-A (GB)
Title: A variable speed gear
IPC: F16H3/08
Filed: 1922-03-23
Abstract: 199,161. Deans, R. March 23, 1922. No Patent granted (Sealing fee not paid). Variable-speed gearing. - A four-speed g e a r employs six toothed gears A - - F, constantly meshing in pairs, and the speed changes are effected by change of engagement of dcg clutches, not more than one of these clutch members being separate from a gear, the others, or all of them being upon the end faces of the ge.ars. In the form shown, the separate clutch member P slides on a squared part S of driving-shaft M, upon which a driven hollow shaft H is mounted. The speeds entrain the following elements respectively : PBA; CFEBA; CFDA; PBEDA.
Patent GB-271798-A (GB)
Title: Improvements in or relating to the production of corrosionresistant articles
IPC: B23K20/233
Filed: 1927-03-28
Abstract: 271,798. Aluminum Co., of America, (Assignees of Dix, E. H.). Jan. 22, 1927, [Convention date]. Moulds.-Articles of aluminium base alloy are made corrosion-resistant by casting the base alloy on to facing plates of aluminium or corrosionresistant aluminium alloy and then applying pressure and heat to the casting. The well known base alloys containing, in addition to impurities such as iron, the following percentages of added metals may be used : -A copper 3 to 5, magnesium 0.5, manganese 0.6; B copper 4 to 5.5, manganese 0.6; C magnesium 0.7, silicon 0.9. One or two facing plates of electrolytically refined aluminium may be clamped to, or inserted in grooves to hold them against, the smooth inner face of an iron mould, which may be water-cooled to avoid fusion of the plates. Casting processes; castings.-The base alloy is preferably poured gently down an unlined face of the tilted mould. While still hot or after heating to a temperature well below the melting point of eutectics present, for instance 480 to 500‹ C. for alloy A, the compound ingot is rolled to complete the union and form a plate of the required thickness. The plate may then be cold rolled and given a suitable heat treatment, for instance 520‹ C. in fused sodium and potassium nitrate for 20 minutes followed by quenching in water and ageing at room temperature for alloy A. Alloy C is aged at 100‹ C. In casting ingots for drawing tubes, rods, wire &c. the facing metal may be in the form of a tube. If a hard surface is required alloys of aluminium with manganese or beryllium may be used for the facing metal.
Patent GB-730504-A (GB)
Title: Process for esterifying a glycidyl ether and the resulting esterified ether
IPC: C08L63/00
Filed: 1953-03-27
Abstract: A method of esterifying substantially all of the hydroxy groups but substantially none of the epoxy groups in a glycidyl ether of a polyhydric ocmpound which has an average number of epoxy groups per molecule of greater than one comprises heating the glycidyl ether with an anhydride of a monocarboxylic acid having at least 2 carbon atoms under substantially anhydrous conditions and distilling liberated monocarboxylic acid from the reaction mixture substantially as soon as it is formed.  The glycidyl ethers may be prepared as described in Specifications 680,997, 681,001 and 681,991.  Specified anhydrides are acetic, propionic, butyric and isobutyric anhydrides. Preferably reaction is performed in presence of an inert liquid which forms an azeotrope with the monocarboxylic acid formed and preferably also with water.  The glycidyl ether and acid anhydride may be previously heated with an azeotropic liquid to remove water and free carboxylic acid respectively.  The esterified glycidyl ether may be compounded with 20-100 per cent by weight of a vinyl resin to form a coating composition.  In examples (1) a mixture of 2,2-bis(4-hydroxyphenyl-propane, epichlorhydrin and aqueous sodium hydroxide was reacted to form a glycidyl ether having a molecular weight of 460, a hydroxyl value of 0.142 and an epoxide value of 0.405.  The glycidyl ether was then dehydrated by heating with benzene, acetic anhydride added and the mixture heated while distilling off the benzene/acetic acid azeotrope.  The ester was finally stripped of remaining benzene and unreacted acetic anhydride by heating under reduced pressure.  A solution of the acetylated glycidyl ether was then added to a solution in methyl ethyl ketone and toluene of polyvinyl acetate or a copolymer of 95 per cent of vinyl chloride and 5 per cent of vinyl acetate; (2) similar to (1) but using toluene instead of benzene; (3) the glycidyl ether of example (1) and propionic anhydride were separately dehydrated and freed from propionic acid respectively by heating with monochlorobenzene.  The glycidyl ether in monochlorobenzene was then added to the propionic anhydride in monochlorobenzene and the esterification reaction performed as in example (1).  Specification 730,505 also is referred to.ALSO:A monocarboxylic acid having more than two carbon atoms is removed from its admixture with its anhydride by adding to the mixture an inert liquid which forms an azeotrope with the acid and heating to distil off this azeotrope. Specified acids are acetic, propionic, butyric and iso-butyric. Specified azeotropic liquids are aromatic hydrocarbons, e.g. benzene or toluene and halogenated derivatives of aromatic hydrocarbons, e.g. monochlorobenzene.
Patent GB-693070-A (GB)
Title: Improvements in storage batteries
IPC: H01M10/34
Filed: 1951-04-12
Abstract: 693,070. Batteries. JACQUIER, P. A. C. April 12, 1951 [April 21, 1950], No. 8536/51. Class 53. A sealed accumulator in which the gases are absorbed by the electrodes has one electrode 10 in the form of a mass, which may be of sintered metal, and is formed with cavities 11 to receive the other eectrode 12 from which a conductor 13 extends to the exterior of the container to form the terminal 14. The container is of metal and is in contact with the electrode 10 and provided with a terminal 22. A duct 15 may connect the spaces 16, 17 so that in the event of excessive gas pressure in the cavities 11 electrolyte is forced out of the cavities into the space 17. The duct 15 may be connected to a funnel 20 to facilitate the return of electrolyte from the space 17 to the bottom of the accumulator. Specification 447,757 is referred to.
Patent GB-155496-A (GB)
Title: Improved device for punching holes in the ends of driving belts and the like and fortrimming the same
IPC: F16G3/00
Filed: 1920-03-23
Abstract: 155,496. Aktieselskabet Ixi, and Moller, M. C. Gleerup-. March 23, 1920 Pliers and cutters.-A device for punching holes in, and trimming the ends of driving belts and the like comprises a pair of pliers 1, Figs. 1 and 3, one jaw 2 of which carries a guide plate 3 and is pivoted at 6 to a second guide plate 5 for swinging movement relatively to a base plate 7, while the other jaw carries a punch 13 and a guide pin 15 spaced' apart to correspond with a series of holes 8 in the base plate. The belt end is clamped to the base plate by an eccentrically-mounted roller 10, and is perforated step by step by the punch 13, which is only operative when the guide pin 15 registers with one of the holes 8. When the belt end is to be trimmed, the pliers are moved to register with an opening 17 in the base plate, and are then swung downwards, Fig. 2, until a knife 18 secured to the guide plate 3 is in line with a passage 20 in a side bracket 12. At the same time, an edge 21 of the plate 3 engages a guiding slot in the base plate. The pliers are then moved across the base plate to trim the belt end, the knife moving in a. guide slot 19, Fig. 3.
Patent GB-1352792-A (GB)
Title: Time division multiplex optical scanning systems
IPC: B61L25/04
Filed: 1972-02-24
Abstract: 1352792 Multiplex optical scanning system COMPUTER IDENTICS CORP 24 Feb 1972 [26 Feb 1971] 8582/72 Heading G1A A plurality of code-reading opto-electronic scanners of the type using a rotating multifacetted mirror for scanning vertically codes on respective rail wagons, are interleaved by driving them in fixed phase relation so that their effective scans are time contiguous and supplying the resulting signal outputs sequentially to common processing apparatus under the control of "scanning start" signals developed in an auxiliary photocell positioned to receive the beam at the start of the scan. Groups of six, and three scanners using respectively two and four facetted mirrors, are described and speeds of mirror rotation, to deal with different train speeds is discussed. Scanner identification signals are fed to the processor by the "scan start" signal. The rotating mirrors may be driven by synchronous motors from a common source and be keyed in appropriate positions to achieve the desired phase relationship.
Patent GB-954538-A (GB)
Title: Jet propelled toy
IPC: A63H29/14
Filed: 1963-03-05
Abstract: 954,538. Flying jet devices. WHAM-O MFG. CO. March 5, 1963 [June 1, 1962], No. 8704/63. Heading A6S. A captive flying jet device comprises an inverted U-shaped tube 16 with a jet 18, coupled to a mains water supply by a length of light flexible tube. The jet 18 is directed inwardly towards an axis X, X, but set in such a manner that the direction of the lines are not in the same plane, Fig. 2. As a result of the setting of the jet and the tendency of the pipe 11 to return to a non-twisted state, the apparatus makes unusual gyrations in the air.
Patent GB-844499-A (GB)
Title: Sliding clasp fastener
IPC: A44B19/38
Filed: 1958-03-19
Abstract: 844,499. Sliding clasp fasteners. YOSHIDA, T. March 19, 1958, No. 8811/58. Drawings to Specification. Class 44 In a sliding clasp fastener the end portions of each tape comprise two layers of tape of the same quality bonded together by a layer of a polyamide or vinyl resin, an end member being fixed to one end portion of each tape. The layer of resin is liquefied by the application of heat to bond the tapes together.
Patent GB-1528433-A (GB)
Title: Temperature correction system for a fluid flow meter
IPC: G01F15/02
Filed: 1977-03-02
Abstract: 1528433 Measuring flow-rate electrically SINGER CO 2 March 1977 [27 Oct 1976] 08818/77 Heading G I N  Each pulse of a pulse train produced by a fluid flowmeter triggers a burst generator to produce a predetermined number of pulses corresponding to a base temperature, this number being modified in accordance with the temperature of the fluid as measured by a thermistor. As shown (Fig. 1), the temperature of fluid in a pipe 12 is sensed by a thermistor 11 which, with resistor 15 and capacitor 16, determines the pulse width output F from a monostable MV 17, to make it inversely proportional to absolute temperature. Each pulse A from a flowmeter 14 is cleaned at 18 and its trailing edge triggers a MV 39 to produce a pulse C whose leading edge closes switch 20 to supply power for a predetermined limited period to MV 17 and to remove an inhibit from clockpulse generator 23, the trailing edge of pulse C triggering MV 17 to open gate 25 for one pulse F. The number of clockpulses G passed by gate 25 is inversely proportional to the fluid temperature, and by subtracting this from a predetermined initial count in counter 27, produces a number N representing the absolute temperature of the fluid. A burst generator 30 is pre-set to produce a predetermined number of pulses for each pulse F corresponding to unit volume at a given base temperature. This is divided at 34 by N to give a corrected flow-rate and totalled at 36 to give the volume flow. The system restricts the power taken by the apparatus to the periods when switch 20 is closed.